The influence by trapezoidal conductor shapes on ring-resonator based material characterization up to 110 GHz
The influence by trapezoidal conductor shapes on ring-resonator based material characterization up to 110 GHz
复制标题
梯形导体形状对高达 110 GHz 的环形谐振器材料表征的影响
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
U. Schmid
中科院分区：
文献类型：
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作者：
A. Talai;R. Weigel;A. Koelpin;Frank Steinhauser;A. Bittner;U. Schmid
自 20 世纪初以来，通过基于环形谐振器的测量来表征材料已经很成熟。从那时起，对更高微波频率下射频材料和电介质覆盖物的光谱复介电常数表征的需求不断增加。如今，自由空间应用程序，例如77 GHz 汽车雷达系统和微芯片封装的电介质需要准确了解相对介电常数，以便优化射频电路设计。随着频率的增加，光化学蚀刻环形谐振器的导体形状对有效环半径以及测量的谐振频率的影响更大，这导致相对介电常数测定的误差。本文提供了高达 110 GHz 的环半径的校正因子，以补偿由于梯形边缘而改变的场分布。
Material characterization by ring-resonator based measurements is well established since the early 20th century. Since then, the demand on spectral complex permittivity characterizations of RF materials and dielectric covers at higher microwave frequencies rises. Nowadays, both free space applications, e.g. 77 GHz automotive radar systems, and dielectrics for microchip packages require accurate knowledge of the relative permittivity in order to optimize RF circuit designs. With increasing frequencies, the conductor shape of photochemically etched ring-resonators gets more influence on the effective ring radius, and therefore the measured resonance frequencies, which results in an error for the relative permittivity determination. This paper provides correction factors for the ring radii up to 110 GHz, compensating the altered field distribution due to trapezoidal edges.